identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
82A6676529CF5A6B913793D1A0EBF374.text	82A6676529CF5A6B913793D1A0EBF374.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cedusini Emeljanov 1992	<div><p>Tribe Cedusini Emeljanov, 1992</p><p>Type genus.</p><p>Cedusa Fowler, 1904 .</p><p>Diagnostic characters.</p><p>Sensory pits absent on head and forewing. Second segment of rostrum longer than wide, its length less than twice its width. Subantennal process well developed. Forewing with the clavus closed; CuA branches non-anastomosing. Hindwing jugal margin lacking a stridulatory plate. In the female, abdominal sternite VII not fused with tergite VIII. Hind tibia without lateral spines. Hind leg spinal formula usually (5–9) - (5–6) - (4–6).</p></div>	https://treatment.plazi.org/id/82A6676529CF5A6B913793D1A0EBF374	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Sui, Yong-Jin;Li, Zi-Zhong;Chen, Xiang-Sheng;Yang, Lin	Sui, Yong-Jin, Li, Zi-Zhong, Chen, Xiang-Sheng, Yang, Lin (2026): Dusaceus gen. nov., a new derbid genus of the tribe Cedusini (Hemiptera, Fulgoromorpha, Derbidae), with descriptions of two new species from China. ZooKeys 1280: 349-364, DOI: 10.3897/zookeys.1280.186668
828B4B3EBB775E37B74B3F57F7CEE094.text	828B4B3EBB775E37B74B3F57F7CEE094.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dusaceus lvchunensis Sui, Li & Chen 2026	<div><p>Dusaceus lvchunensis Sui, Li &amp; Chen sp. nov.</p><p>Figs 1, 2, 3, 4, 5</p><p>Type material.</p><p>Holotype ♂ (GUGC), China • Yunnan, Lvchun, 13 Aug. 2014, Y-J Wang (no. Der 14081301) . Paratypes, • 1 ♂ (GUGC), same data as holotype (no. Der 14081302); • 2 ♂♂ (GUGC), Z-X Zhou, other data same as holotype (no. Der 14081303, Der 14081304); • 2 ♂♂ (GUGC), Yunnan, Lvchun, 4 Aug. 2023, Y-J Sui (no. Der 23080401, Der 23080402) .</p><p>Measurements.</p><p>Body length (including forewing): male 5.6–6.0 mm (n = 6); forewing length: male 5.1–5.3 mm (n = 6).</p><p>Description.</p><p>Colouration. General colour pale brown (Fig. 1). Vertex (Figs 1 A, 2 A) yellowish brown. Frons (Fig. 2 B), clypeus, gena, antennae, and subantennal process dark yellow (Fig. 2 C). Eyes (Figs 1, 2 A – C) fusco-testaceous; lateral ocelli (Fig. 2 C) yellowish white. Rostrum dark yellow, apex fuscous. Pronotum and tegula (Figs 1 A, 2 A) yellowish brown. Mesonotum (Figs 1 A, 2 A) brown. Forewing (Fig. 1) pale brown, veins concolourous. Hindwing subhyaline, greyish white; veins pale black. Thorax (Fig. 1 B) with ventral areas yellowish brown. Legs (Fig. 1 B) brownish yellow. Male terminalia dark brown.</p><p>Head and thorax. Head (Figs 1 A, 2 A) with eyes distinctly narrower than pronotum (ca 1: 1.37), short. Vertex (Figs 1 A, 2 A) in dorsal view trapezoidal, ratio of width between basal angles to median length approximately 5.1: 1, slightly projecting in front of eyes; apical margin distinctly carinate; posterior margin concave; lateral carinae elevated, median carina absent; disc slightly depressed. Frons (Fig. 2 B) longer than wide (ratio of median length to maximum width approximately 1.42: 1), shorter than clypeus (ratio approximately 1: 1.45); disc depressed in entire length, lateral margins carinate. Postclypeus (Fig. 2 B) with median and lateral carinae. Apical segment of rostrum slightly longer than wide. Antennae (Fig. 2 C) short; pedicel subglobose; flagellum arising from apical point. Subantennal processes (Fig. 2 C) distinct, ear-shaped. Gena with transversely oblique carina (Fig. 2 C) between subantennal process and lateral carina of frons; transverse carina becoming indistinct near its end. Eyes (Fig. 2 C) semicircular. Lateral ocelli (Fig. 2 C) distinct, adjacent to both eyes and antennae. Pronotum (Fig. 2 A) median length, subequal to that of vertex; anterior margin between eyes broadly convex; length behind eyes equal to median length; posterior margin deeply concave. Mesonotum (Fig. 2 A, C) dorsally elevated, elevated above the plane of vertex in lateral view, median carina slightly elevated, posterior end triangularly depressed. Forewing (Fig. 2 D) narrow, ratio of length to maximum width approximately 2.8: 1; clavus closed; RA with two terminals; RP with two terminals; MP with five terminals. Hindwing (Fig. 2 E) shorter than forewing; ScP + RA long, reaching anterior margin near apical third; RP reaching apical margin; MP single; CuA with three terminals. Spinal formula of hind leg 6-5 - 5.</p><p>Male terminalia. Pygofer (Figs 3 A, 4 A) with dorsal margin distinctly shorter than ventral margin in lateral view; dorsocaudal angle not produced. Anal tube (Figs 3 B, 4 B) moderately long. In lateral view (Figs 3 A, 4 A), dorsal margin longer than ventral margin, gradually widening from base to apex; segment XI (epiproct and paraproct) (Figs 3 A, 4 A) inserted apically; paraproct elongated. In dorsal view (Figs 3 B, 4 B), ratio of basal width to narrowest part approximately 2.37: 1; ratio of median length (including epiproct and paraproct) to maximum basal width approximately 3.18: 1. Gonostyli (Figs 3 C – E, 4 C – E) symmetrical or nearly so, apically furcate; with dorsal projection basal; a long, slender process arising from ventral margin near base, extending to near apical third of ventral margin. Phallic complex (Fig. 3 F, G, 4 F, G) asymmetrical. Periandrium robust, slightly curved. In left lateral view (Figs 3 F, 4 F), a large, irregular process arising from dorsal margin near base; its dorsoapical angle of process produced into a long, finger-shaped projection dorsally directed; a long lamina situated on left side of this irregular process near dorsal margin; a long, apically acute process arises from middle of ventral margin; a long, sheet-like process arising from middle to apex, its dorsal margin irregularly wavy. In right lateral view (Figs 3 G, 4 G), a large, broad, sheet-like process arising from base, exceeding apex of periandrium; apex of periandrium produced into a ventrally directed, hooked process visible in both lateral views. Endosoma (Fig. 3 F, G, 4 F, G) simple, with a long, torsional lamina on left side near middle, and a large membranous process on right side.</p><p>Remarks.</p><p>The new genus currently comprises only two species: D. lvchunensis sp. nov. (collected from Yunnan) and D. suiyangensis sp. nov. (collected from Guizhou). Although the sole known male specimen of D. suiyangensis was damaged during dissection, the two species can still be readily distinguished based on the male terminalia. The key differences are as follows: gonostyli apically furcate (apically not furcate in D. suiyangensis); gonostyli ventral process extending to near the apical third of its margin (extending nearly to the apex in D. suiyangensis); phallic complex similar in general structure, but shape of homologous processes markedly different (compare Figs 3 F, 3 G, 4 F, 4 G with 7 F, G, 8 F, G).</p><p>Etymology.</p><p>The specific epithet is derived from the type locality, Lvchun County, Yunnan Province, China.</p><p>Distribution.</p><p>Known only from the type locality.</p></div>	https://treatment.plazi.org/id/828B4B3EBB775E37B74B3F57F7CEE094	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Sui, Yong-Jin;Li, Zi-Zhong;Chen, Xiang-Sheng;Yang, Lin	Sui, Yong-Jin, Li, Zi-Zhong, Chen, Xiang-Sheng, Yang, Lin (2026): Dusaceus gen. nov., a new derbid genus of the tribe Cedusini (Hemiptera, Fulgoromorpha, Derbidae), with descriptions of two new species from China. ZooKeys 1280: 349-364, DOI: 10.3897/zookeys.1280.186668
2EC6CEF0F7C850ECB223E81764F8E0BD.text	2EC6CEF0F7C850ECB223E81764F8E0BD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dusaceus Sui, Li & Chen 2026	<div><p>Genus Dusaceus Sui, Li &amp; Chen gen. nov.</p><p>Type species.</p><p>Dusaceus lvchunensis Sui, Li &amp; Chen, sp. nov., here designated.</p><p>Description.</p><p>Head (Figs 1 A, 2 A) with eyes distinctly narrower than pronotum; vertex (1 A, 2 A) widely trapezoidal, with anterior margin (between lateral carinae of frons) two-thirds as wide as posterior margin; median carina absent; posterior margin slightly concave; lateral margins of frons anteriorly extending in dorsal view. Frons (Figs 2 B, 6 A) without median carina, concave, with lateral margins elevated and delimited from vertex by a distinct, transverse carina. Postclypeus (Figs 2 B, 6 A) longer at median line than frons; both medial and lateral carinae present. Apical segment of rostrum slightly longer than wide, extending beyond hind coxae. Lateral ocelli (Figs 1 B, 2 C) present, below ventral margin of eyes. Subantennal process (Figs 1 B, 2 C, 6 A) well developed. Gena with a carina (Fig. 2 C) between subantennal process and lateral carina of frons; carina obliquely oriented. Antennal pedicel (Figs 1 B, 2 C, 6 A) subglobose, slightly longer than wide.</p><p>Pronotum (Figs 1 A, 2 A) relatively short, subequal to vertex in midlength. In dorsal view, anterior margin follows contours of head; posterior margin deeply concave. Lateral carinae and ventral margins lacking a subfoliaceous expansion to form cup-shaped antennal fovea. Mesonotum (Fig. 2 A, C) convex, elevated above vertex in profile, broader than long at midline, with a distinct median carina. Forewing (Figs 2 D, 6 B, 6 C) narrow; postcostal cell long; RA with one or two terminals; RP with two terminals; MP with four or five terminals, forked slightly beyond midlength; CuA forked at level of claval veins junction; crossvein m-cu situated between MP 3 + 4 and CuA 1; clavus closed, with apex slightly exceeding forewing midlength. Hindwing (Figs 2 E, 6 D) with vein ScP + RA long, running subparallel to RP, reaching anterior margin near apical third; MP single; CuA with three terminals. Hind leg lacking lateral spines, spinal formula 6-5 - 5.</p><p>Male pygofer (Figs 3 A, 4 A) in lateral view with dorsal margin distinctly shorter than ventral margin; dorsocaudal angle not produced. Male anal tube (Figs 3 B, 4 B) moderately long, dorsal margin longer than ventral margin in lateral view; segment XI (epiproct and paraproct) (Figs 3 A, 4 A, 7 A, 8 A) apically inserted. Gonostyli (Figs 3 C – E, 4 C – E, 7 C – E, 8 C – E) with basal dorsal projection; with a long, slender process arising from ventral margin near base, greatly exceeding middle of ventral margin.</p><p>Remarks.</p><p>The new genus is externally similar to other genera of Cedusini from China. It can be distinguished by the following combination of characters: male pygofer with dorsocaudal angle not produced (also not produced in Hauptenia and Muiredusa; produced into a process in Produsa); male anal tube with the dorsal margin longer than ventral margin (also longer in Muiredusa; shorter than ventral margin in Hauptenia and Produsa); gonostylus with dorsal projection basal (also basal in Muiredusa and Produsa; dorsal projection distal in Hauptenia); male paraproct not apically forked (also not forked in Hauptenia and Produsa; apically forked in Muiredusa); gonostylus with a long process on the ventral margin near its base (such a process lacking in Hauptenia, Produsa, and Muiredusa).</p><p>Etymology.</p><p>The generic name is an arbitrary combination of letters. Gender masculine.</p><p>Distribution.</p><p>China (Yunnan, Guizhou).</p><p>Key to the species of genus Dusaceus Sui, Li &amp; Chen, gen. nov. (male)</p></div>	https://treatment.plazi.org/id/2EC6CEF0F7C850ECB223E81764F8E0BD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Sui, Yong-Jin;Li, Zi-Zhong;Chen, Xiang-Sheng;Yang, Lin	Sui, Yong-Jin, Li, Zi-Zhong, Chen, Xiang-Sheng, Yang, Lin (2026): Dusaceus gen. nov., a new derbid genus of the tribe Cedusini (Hemiptera, Fulgoromorpha, Derbidae), with descriptions of two new species from China. ZooKeys 1280: 349-364, DOI: 10.3897/zookeys.1280.186668
32A6DBF1FD175A03BBFFF24AD3EAFD9A.text	32A6DBF1FD175A03BBFFF24AD3EAFD9A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dusaceus suiyangensis Sui, Li & Chen 2026	<div><p>Dusaceus suiyangensis Sui, Li &amp; Chen sp. nov.</p><p>Figs 6, 7, 8</p><p>Type material.</p><p>Holotype ♂ (GUGC), China • Guizhou, Suiyang, 23 Aug. 2020, S-S Lv (no. Der 20082301).</p><p>Measurements.</p><p>Forewing length: male 4.96 mm (n = 1).</p><p>Description.</p><p>Colouration. Frons (Fig. 6 A), clypeus, gena, antennae, and subantennal process dark yellow. Eyes fusco-testaceous; lateral ocelli yellowish white. Forewing pale brown; veins concolorous. Hindwing subhyaline, greyish white; veins pale black. Legs brownish yellow. Terminalia brown.</p><p>Head and thorax. Frons (Fig. 6 A) longer than wide (ratio of median length to maximum width approximately 1.44: 1), shorter than clypeus (ratio approximately 1: 1.26); disc depressed over entire length; lateral margins carinate. Postclypeus (Fig. 6 A) with median and lateral carinae. Antennae (Fig. 6 A) short; pedicel subglobose; flagellum arising from apical point. Subantennal processes (Fig. 6 A) distinct, ear-shaped. Gena with a transversely oblique carina between subantennal process and lateral carina of frons; this carina becomes indistinct near its end. Eyes semicircular. Lateral ocelli distinct, adjacent to both eyes and antennae. Forewing (Fig. 6 B, C) narrow; ratio of length to maximum width approximately 2.7: 1; clavus closed; RA with two terminals in left forewing (only one in right); RP with two terminals; MP with four terminals in left forewing (five in right). Hindwing (Fig. 6 D) shorter than forewing; ScP + RA long, reaching anterior margin near apical third; RP reaching apical margin; MP single; CuA with three terminals. Spinal formula of hind leg 6-5 - 5.</p><p>Male terminalia. Pygofer (Figs 7 A, 8 A) in lateral view with dorsal margin distinctly shorter than ventral margin; dorsocaudal angle not produced. Anal tube (Figs 7 B, 8 B) moderately long. In lateral view (Figs 7 A, 8 A), dorsal margin longer than ventral margin, gradually widening from base to apex; segment XI (epiproct and paraproct) (Figs 7 A, 8 A) apically inserted. Gonostyli (Figs 7 C – E, 8 C – E) symmetrical or nearly so, apically acute, not furcate; with dorsal projection basal; a long, slender process arising from ventral margin near base, extending to near apex of ventral margin. Phallic complex (Figs 7 F, 7 G, 8 F, 8 G) asymmetrical. Periandrium robust, slightly curved. In left lateral view (Figs 7 F, 8 F), three processes arise from dorsal margin near base, with rightmost process longest; a strong, apically acute process arising from middle of ventral margin, bearing a sharp spine near its midlength; a slender, sheet-like process arising near apex. In right lateral view (Figs 7 G, 8 G), a long, slender, sheet-like process arises from the base, furcate near base, torsional near middle, apically acute; apex of periandrium produced into a long, slender, ventrally directed process, visible in both lateral views. Endosoma (Figs 7 F, 7 G, 8 F, 8 G) simple, with three long, slender processes and a large, subrectangular, membranous process.</p><p>Remarks.</p><p>Due to the damage to the sole specimen during dissection, some morphological details are incomplete. Nonetheless, based on the remaining structures and its general similarity to other species in the subtribe Cedusina Emeljanov, 1992, D. suiyangensis sp. nov. is considered very similar to D. lvchunensis sp. nov. The primary diagnostic differences lie in the structure of the male genitalia.</p><p>Etymology.</p><p>The specific epithet is derived from the type locality, Suiyang County, Guizhou Province, China.</p><p>Distribution.</p><p>Known only from the type locality.</p></div>	https://treatment.plazi.org/id/32A6DBF1FD175A03BBFFF24AD3EAFD9A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Sui, Yong-Jin;Li, Zi-Zhong;Chen, Xiang-Sheng;Yang, Lin	Sui, Yong-Jin, Li, Zi-Zhong, Chen, Xiang-Sheng, Yang, Lin (2026): Dusaceus gen. nov., a new derbid genus of the tribe Cedusini (Hemiptera, Fulgoromorpha, Derbidae), with descriptions of two new species from China. ZooKeys 1280: 349-364, DOI: 10.3897/zookeys.1280.186668
